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Finding the Fourth Proportional to 972.13, 1,458.03 and 322.87

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Solution

The fourth proportional to 972.13, 1,458.03 and 322.87 is: 484.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.13 : 1,458.03 = 322.87 : x
  2. Step 2: Convert to fraction form
    972.13/1,458.03 = 322.87/x
  3. Step 3: Cross multiply
    972.13x = 1,458.03 × 322.87
  4. Step 4: Simplify right side
    972.13x = 470,754.15
  5. Step 5: Solve for x
    x = 470,754.15/972.13
  6. Step 6: Final answer
    x = 484.25

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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.