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Finding the Fourth Proportional to 2,315.53, 3,472.67 and 649.55

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Solution

The fourth proportional to 2,315.53, 3,472.67 and 649.55 is: 974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.53 : 3,472.67 = 649.55 : x
  2. Step 2: Convert to fraction form
    2,315.53/3,472.67 = 649.55/x
  3. Step 3: Cross multiply
    2,315.53x = 3,472.67 × 649.55
  4. Step 4: Simplify right side
    2,315.53x = 2,255,683.10
  5. Step 5: Solve for x
    x = 2,255,683.10/2,315.53
  6. Step 6: Final answer
    x = 974.16

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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.