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Finding the Fourth Proportional to 488.61, 732.17 and 436.98

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Solution

The fourth proportional to 488.61, 732.17 and 436.98 is: 654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.61 : 732.17 = 436.98 : x
  2. Step 2: Convert to fraction form
    488.61/732.17 = 436.98/x
  3. Step 3: Cross multiply
    488.61x = 732.17 × 436.98
  4. Step 4: Simplify right side
    488.61x = 319,941.46
  5. Step 5: Solve for x
    x = 319,941.46/488.61
  6. Step 6: Final answer
    x = 654.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.