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Finding the Fourth Proportional to 873.89, 1,309.28 and 462.12

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Solution

The fourth proportional to 873.89, 1,309.28 and 462.12 is: 692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.89 : 1,309.28 = 462.12 : x
  2. Step 2: Convert to fraction form
    873.89/1,309.28 = 462.12/x
  3. Step 3: Cross multiply
    873.89x = 1,309.28 × 462.12
  4. Step 4: Simplify right side
    873.89x = 605,042.16
  5. Step 5: Solve for x
    x = 605,042.16/873.89
  6. Step 6: Final answer
    x = 692.36

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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.