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Finding the Fourth Proportional to 622.97, 860.02 and 482.77

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Solution

The fourth proportional to 622.97, 860.02 and 482.77 is: 666.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.97 : 860.02 = 482.77 : x
  2. Step 2: Convert to fraction form
    622.97/860.02 = 482.77/x
  3. Step 3: Cross multiply
    622.97x = 860.02 × 482.77
  4. Step 4: Simplify right side
    622.97x = 415,190.31
  5. Step 5: Solve for x
    x = 415,190.31/622.97
  6. Step 6: Final answer
    x = 666.47

Related Problems

Find fourth proportional to 311.48, 430.01 and 241.38
Half scale
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Double scale
Find fourth proportional to 623.97, 861.40 and 483.77
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.