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Finding the Fourth Proportional to 956.99, 1,435.47 and 545.25

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Solution

The fourth proportional to 956.99, 1,435.47 and 545.25 is: 817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.99 : 1,435.47 = 545.25 : x
  2. Step 2: Convert to fraction form
    956.99/1,435.47 = 545.25/x
  3. Step 3: Cross multiply
    956.99x = 1,435.47 × 545.25
  4. Step 4: Simplify right side
    956.99x = 782,691.81
  5. Step 5: Solve for x
    x = 782,691.81/956.99
  6. Step 6: Final answer
    x = 817.87

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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.