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Finding the Fourth Proportional to 622.56, 860.10 and 530.28

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Solution

The fourth proportional to 622.56, 860.10 and 530.28 is: 732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.56 : 860.10 = 530.28 : x
  2. Step 2: Convert to fraction form
    622.56/860.10 = 530.28/x
  3. Step 3: Cross multiply
    622.56x = 860.10 × 530.28
  4. Step 4: Simplify right side
    622.56x = 456,093.83
  5. Step 5: Solve for x
    x = 456,093.83/622.56
  6. Step 6: Final answer
    x = 732.61

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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.