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Finding the Fourth Proportional to 972.32, 1,448.51 and 925.88

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Solution

The fourth proportional to 972.32, 1,448.51 and 925.88 is: 1,379.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.32 : 1,448.51 = 925.88 : x
  2. Step 2: Convert to fraction form
    972.32/1,448.51 = 925.88/x
  3. Step 3: Cross multiply
    972.32x = 1,448.51 × 925.88
  4. Step 4: Simplify right side
    972.32x = 1,341,134.57
  5. Step 5: Solve for x
    x = 1,341,134.57/972.32
  6. Step 6: Final answer
    x = 1,379.32

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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.