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Finding the Fourth Proportional to 948.70, 1,422.85 and 363.51

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Solution

The fourth proportional to 948.70, 1,422.85 and 363.51 is: 545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.70 : 1,422.85 = 363.51 : x
  2. Step 2: Convert to fraction form
    948.70/1,422.85 = 363.51/x
  3. Step 3: Cross multiply
    948.70x = 1,422.85 × 363.51
  4. Step 4: Simplify right side
    948.70x = 517,220.20
  5. Step 5: Solve for x
    x = 517,220.20/948.70
  6. Step 6: Final answer
    x = 545.19

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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.