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Finding the Fourth Proportional to 1,069.70, 1,591.96 and 1,030.82

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Solution

The fourth proportional to 1,069.70, 1,591.96 and 1,030.82 is: 1,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.70 : 1,591.96 = 1,030.82 : x
  2. Step 2: Convert to fraction form
    1,069.70/1,591.96 = 1,030.82/x
  3. Step 3: Cross multiply
    1,069.70x = 1,591.96 × 1,030.82
  4. Step 4: Simplify right side
    1,069.70x = 1,641,024.21
  5. Step 5: Solve for x
    x = 1,641,024.21/1,069.70
  6. Step 6: Final answer
    x = 1,534.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.