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Finding the Fourth Proportional to 630.47, 868.82 and 585.88

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Solution

The fourth proportional to 630.47, 868.82 and 585.88 is: 807.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.47 : 868.82 = 585.88 : x
  2. Step 2: Convert to fraction form
    630.47/868.82 = 585.88/x
  3. Step 3: Cross multiply
    630.47x = 868.82 × 585.88
  4. Step 4: Simplify right side
    630.47x = 509,021.43
  5. Step 5: Solve for x
    x = 509,021.43/630.47
  6. Step 6: Final answer
    x = 807.37

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Double scale
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1.5x scale

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.