Home / 1,047.20-1,569.90-534.20

Finding the Fourth Proportional to 1,047.20, 1,569.90 and 534.20

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Solution

The fourth proportional to 1,047.20, 1,569.90 and 534.20 is: 800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.20 : 1,569.90 = 534.20 : x
  2. Step 2: Convert to fraction form
    1,047.20/1,569.90 = 534.20/x
  3. Step 3: Cross multiply
    1,047.20x = 1,569.90 × 534.20
  4. Step 4: Simplify right side
    1,047.20x = 838,640.58
  5. Step 5: Solve for x
    x = 838,640.58/1,047.20
  6. Step 6: Final answer
    x = 800.84

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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.