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Finding the Fourth Proportional to 1,530.47, 2,294.46 and 542.74

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Solution

The fourth proportional to 1,530.47, 2,294.46 and 542.74 is: 813.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.47 : 2,294.46 = 542.74 : x
  2. Step 2: Convert to fraction form
    1,530.47/2,294.46 = 542.74/x
  3. Step 3: Cross multiply
    1,530.47x = 2,294.46 × 542.74
  4. Step 4: Simplify right side
    1,530.47x = 1,245,289.01
  5. Step 5: Solve for x
    x = 1,245,289.01/1,530.47
  6. Step 6: Final answer
    x = 813.67

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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.