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Finding the Fourth Proportional to 1,432.53, 1,977.05 and 803.22

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Solution

The fourth proportional to 1,432.53, 1,977.05 and 803.22 is: 1,108.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.53 : 1,977.05 = 803.22 : x
  2. Step 2: Convert to fraction form
    1,432.53/1,977.05 = 803.22/x
  3. Step 3: Cross multiply
    1,432.53x = 1,977.05 × 803.22
  4. Step 4: Simplify right side
    1,432.53x = 1,588,006.10
  5. Step 5: Solve for x
    x = 1,588,006.10/1,432.53
  6. Step 6: Final answer
    x = 1,108.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.