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Finding the Fourth Proportional to 737.78, 1,017.90 and 527.58

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Solution

The fourth proportional to 737.78, 1,017.90 and 527.58 is: 727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.78 : 1,017.90 = 527.58 : x
  2. Step 2: Convert to fraction form
    737.78/1,017.90 = 527.58/x
  3. Step 3: Cross multiply
    737.78x = 1,017.90 × 527.58
  4. Step 4: Simplify right side
    737.78x = 537,023.68
  5. Step 5: Solve for x
    x = 537,023.68/737.78
  6. Step 6: Final answer
    x = 727.90

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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.