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Finding the Fourth Proportional to 1,156.11, 1,595.37 and 658.75

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Solution

The fourth proportional to 1,156.11, 1,595.37 and 658.75 is: 909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.11 : 1,595.37 = 658.75 : x
  2. Step 2: Convert to fraction form
    1,156.11/1,595.37 = 658.75/x
  3. Step 3: Cross multiply
    1,156.11x = 1,595.37 × 658.75
  4. Step 4: Simplify right side
    1,156.11x = 1,050,949.99
  5. Step 5: Solve for x
    x = 1,050,949.99/1,156.11
  6. Step 6: Final answer
    x = 909.04

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Half scale
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Double scale
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1.5x scale

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.