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Finding the Fourth Proportional to 737.61, 1,018.14 and 488.95

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Solution

The fourth proportional to 737.61, 1,018.14 and 488.95 is: 674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.61 : 1,018.14 = 488.95 : x
  2. Step 2: Convert to fraction form
    737.61/1,018.14 = 488.95/x
  3. Step 3: Cross multiply
    737.61x = 1,018.14 × 488.95
  4. Step 4: Simplify right side
    737.61x = 497,819.55
  5. Step 5: Solve for x
    x = 497,819.55/737.61
  6. Step 6: Final answer
    x = 674.91

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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.