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Finding the Fourth Proportional to 970.52, 1,332.05 and 863.19

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Solution

The fourth proportional to 970.52, 1,332.05 and 863.19 is: 1,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.52 : 1,332.05 = 863.19 : x
  2. Step 2: Convert to fraction form
    970.52/1,332.05 = 863.19/x
  3. Step 3: Cross multiply
    970.52x = 1,332.05 × 863.19
  4. Step 4: Simplify right side
    970.52x = 1,149,807.92
  5. Step 5: Solve for x
    x = 1,149,807.92/970.52
  6. Step 6: Final answer
    x = 1,184.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.