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Finding the Fourth Proportional to 1,132.93, 1,697.77 and 644.95

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Solution

The fourth proportional to 1,132.93, 1,697.77 and 644.95 is: 966.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.93 : 1,697.77 = 644.95 : x
  2. Step 2: Convert to fraction form
    1,132.93/1,697.77 = 644.95/x
  3. Step 3: Cross multiply
    1,132.93x = 1,697.77 × 644.95
  4. Step 4: Simplify right side
    1,132.93x = 1,094,976.76
  5. Step 5: Solve for x
    x = 1,094,976.76/1,132.93
  6. Step 6: Final answer
    x = 966.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.