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Finding the Fourth Proportional to 751.59, 1,037.31 and 555.66

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Solution

The fourth proportional to 751.59, 1,037.31 and 555.66 is: 766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.59 : 1,037.31 = 555.66 : x
  2. Step 2: Convert to fraction form
    751.59/1,037.31 = 555.66/x
  3. Step 3: Cross multiply
    751.59x = 1,037.31 × 555.66
  4. Step 4: Simplify right side
    751.59x = 576,391.67
  5. Step 5: Solve for x
    x = 576,391.67/751.59
  6. Step 6: Final answer
    x = 766.90

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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.