Home / 1,054.25-1,581.38-477.13

Finding the Fourth Proportional to 1,054.25, 1,581.38 and 477.13

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Solution

The fourth proportional to 1,054.25, 1,581.38 and 477.13 is: 715.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.25 : 1,581.38 = 477.13 : x
  2. Step 2: Convert to fraction form
    1,054.25/1,581.38 = 477.13/x
  3. Step 3: Cross multiply
    1,054.25x = 1,581.38 × 477.13
  4. Step 4: Simplify right side
    1,054.25x = 754,513.55
  5. Step 5: Solve for x
    x = 754,513.55/1,054.25
  6. Step 6: Final answer
    x = 715.69

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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.