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Finding the Fourth Proportional to 878.48, 1,317.52 and 293.51

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Solution

The fourth proportional to 878.48, 1,317.52 and 293.51 is: 440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.48 : 1,317.52 = 293.51 : x
  2. Step 2: Convert to fraction form
    878.48/1,317.52 = 293.51/x
  3. Step 3: Cross multiply
    878.48x = 1,317.52 × 293.51
  4. Step 4: Simplify right side
    878.48x = 386,705.30
  5. Step 5: Solve for x
    x = 386,705.30/878.48
  6. Step 6: Final answer
    x = 440.20

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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.