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Finding the Fourth Proportional to 555.12, 766.33 and 502.47

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Solution

The fourth proportional to 555.12, 766.33 and 502.47 is: 693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.12 : 766.33 = 502.47 : x
  2. Step 2: Convert to fraction form
    555.12/766.33 = 502.47/x
  3. Step 3: Cross multiply
    555.12x = 766.33 × 502.47
  4. Step 4: Simplify right side
    555.12x = 385,056.58
  5. Step 5: Solve for x
    x = 385,056.58/555.12
  6. Step 6: Final answer
    x = 693.65

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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.