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Finding the Fourth Proportional to 631.89, 948.95 and 358.52

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Solution

The fourth proportional to 631.89, 948.95 and 358.52 is: 538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.89 : 948.95 = 358.52 : x
  2. Step 2: Convert to fraction form
    631.89/948.95 = 358.52/x
  3. Step 3: Cross multiply
    631.89x = 948.95 × 358.52
  4. Step 4: Simplify right side
    631.89x = 340,211.02
  5. Step 5: Solve for x
    x = 340,211.02/631.89
  6. Step 6: Final answer
    x = 538.40

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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.