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Finding the Fourth Proportional to 1,030.56, 1,545.85 and 346.56

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Solution

The fourth proportional to 1,030.56, 1,545.85 and 346.56 is: 519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.56 : 1,545.85 = 346.56 : x
  2. Step 2: Convert to fraction form
    1,030.56/1,545.85 = 346.56/x
  3. Step 3: Cross multiply
    1,030.56x = 1,545.85 × 346.56
  4. Step 4: Simplify right side
    1,030.56x = 535,729.78
  5. Step 5: Solve for x
    x = 535,729.78/1,030.56
  6. Step 6: Final answer
    x = 519.84

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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.