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Finding the Fourth Proportional to 639.73, 953.16 and 597.82

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Solution

The fourth proportional to 639.73, 953.16 and 597.82 is: 890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.73 : 953.16 = 597.82 : x
  2. Step 2: Convert to fraction form
    639.73/953.16 = 597.82/x
  3. Step 3: Cross multiply
    639.73x = 953.16 × 597.82
  4. Step 4: Simplify right side
    639.73x = 569,818.11
  5. Step 5: Solve for x
    x = 569,818.11/639.73
  6. Step 6: Final answer
    x = 890.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.