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Finding the Fourth Proportional to 1,039.46, 1,559.22 and 346.10

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Solution

The fourth proportional to 1,039.46, 1,559.22 and 346.10 is: 519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.46 : 1,559.22 = 346.10 : x
  2. Step 2: Convert to fraction form
    1,039.46/1,559.22 = 346.10/x
  3. Step 3: Cross multiply
    1,039.46x = 1,559.22 × 346.10
  4. Step 4: Simplify right side
    1,039.46x = 539,646.04
  5. Step 5: Solve for x
    x = 539,646.04/1,039.46
  6. Step 6: Final answer
    x = 519.16

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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.