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Finding the Fourth Proportional to 504.77, 694.28 and 447.66

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Solution

The fourth proportional to 504.77, 694.28 and 447.66 is: 615.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.77 : 694.28 = 447.66 : x
  2. Step 2: Convert to fraction form
    504.77/694.28 = 447.66/x
  3. Step 3: Cross multiply
    504.77x = 694.28 × 447.66
  4. Step 4: Simplify right side
    504.77x = 310,802.50
  5. Step 5: Solve for x
    x = 310,802.50/504.77
  6. Step 6: Final answer
    x = 615.74

Related Problems

Find fourth proportional to 252.38, 347.14 and 223.83
Half scale
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Double scale
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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.