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Finding the Fourth Proportional to 972.46, 1,457.61 and 395.02

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Solution

The fourth proportional to 972.46, 1,457.61 and 395.02 is: 592.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.46 : 1,457.61 = 395.02 : x
  2. Step 2: Convert to fraction form
    972.46/1,457.61 = 395.02/x
  3. Step 3: Cross multiply
    972.46x = 1,457.61 × 395.02
  4. Step 4: Simplify right side
    972.46x = 575,785.10
  5. Step 5: Solve for x
    x = 575,785.10/972.46
  6. Step 6: Final answer
    x = 592.09

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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.