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Finding the Fourth Proportional to 951.39, 1,415.70 and 948.15

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Solution

The fourth proportional to 951.39, 1,415.70 and 948.15 is: 1,410.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.39 : 1,415.70 = 948.15 : x
  2. Step 2: Convert to fraction form
    951.39/1,415.70 = 948.15/x
  3. Step 3: Cross multiply
    951.39x = 1,415.70 × 948.15
  4. Step 4: Simplify right side
    951.39x = 1,342,295.96
  5. Step 5: Solve for x
    x = 1,342,295.96/951.39
  6. Step 6: Final answer
    x = 1,410.88

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1.5x scale

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.