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Finding the Fourth Proportional to 952.28, 1,428.42 and 530.40

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Solution

The fourth proportional to 952.28, 1,428.42 and 530.40 is: 795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.28 : 1,428.42 = 530.40 : x
  2. Step 2: Convert to fraction form
    952.28/1,428.42 = 530.40/x
  3. Step 3: Cross multiply
    952.28x = 1,428.42 × 530.40
  4. Step 4: Simplify right side
    952.28x = 757,633.97
  5. Step 5: Solve for x
    x = 757,633.97/952.28
  6. Step 6: Final answer
    x = 795.60

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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.