Home / 1,023.13-1,534.70-339.13

Finding the Fourth Proportional to 1,023.13, 1,534.70 and 339.13

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Solution

The fourth proportional to 1,023.13, 1,534.70 and 339.13 is: 508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.13 : 1,534.70 = 339.13 : x
  2. Step 2: Convert to fraction form
    1,023.13/1,534.70 = 339.13/x
  3. Step 3: Cross multiply
    1,023.13x = 1,534.70 × 339.13
  4. Step 4: Simplify right side
    1,023.13x = 520,462.81
  5. Step 5: Solve for x
    x = 520,462.81/1,023.13
  6. Step 6: Final answer
    x = 508.70

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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.