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Finding the Fourth Proportional to 555.10, 766.66 and 432.24

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Solution

The fourth proportional to 555.10, 766.66 and 432.24 is: 596.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.10 : 766.66 = 432.24 : x
  2. Step 2: Convert to fraction form
    555.10/766.66 = 432.24/x
  3. Step 3: Cross multiply
    555.10x = 766.66 × 432.24
  4. Step 4: Simplify right side
    555.10x = 331,381.12
  5. Step 5: Solve for x
    x = 331,381.12/555.10
  6. Step 6: Final answer
    x = 596.98

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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.