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Finding the Fourth Proportional to 754.76, 1,041.47 and 440.09

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Solution

The fourth proportional to 754.76, 1,041.47 and 440.09 is: 607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.76 : 1,041.47 = 440.09 : x
  2. Step 2: Convert to fraction form
    754.76/1,041.47 = 440.09/x
  3. Step 3: Cross multiply
    754.76x = 1,041.47 × 440.09
  4. Step 4: Simplify right side
    754.76x = 458,333.12
  5. Step 5: Solve for x
    x = 458,333.12/754.76
  6. Step 6: Final answer
    x = 607.26

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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.