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Finding the Fourth Proportional to 952.95, 1,428.96 and 432.93

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Solution

The fourth proportional to 952.95, 1,428.96 and 432.93 is: 649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.95 : 1,428.96 = 432.93 : x
  2. Step 2: Convert to fraction form
    952.95/1,428.96 = 432.93/x
  3. Step 3: Cross multiply
    952.95x = 1,428.96 × 432.93
  4. Step 4: Simplify right side
    952.95x = 618,639.65
  5. Step 5: Solve for x
    x = 618,639.65/952.95
  6. Step 6: Final answer
    x = 649.18

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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.