Home / 1,298.12-1,947.20-373.70

Finding the Fourth Proportional to 1,298.12, 1,947.20 and 373.70

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Solution

The fourth proportional to 1,298.12, 1,947.20 and 373.70 is: 560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.12 : 1,947.20 = 373.70 : x
  2. Step 2: Convert to fraction form
    1,298.12/1,947.20 = 373.70/x
  3. Step 3: Cross multiply
    1,298.12x = 1,947.20 × 373.70
  4. Step 4: Simplify right side
    1,298.12x = 727,657.04
  5. Step 5: Solve for x
    x = 727,657.04/1,298.12
  6. Step 6: Final answer
    x = 560.55

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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.