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Finding the Fourth Proportional to 307.40, 423.23 and 292.01

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Solution

The fourth proportional to 307.40, 423.23 and 292.01 is: 402.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.40 : 423.23 = 292.01 : x
  2. Step 2: Convert to fraction form
    307.40/423.23 = 292.01/x
  3. Step 3: Cross multiply
    307.40x = 423.23 × 292.01
  4. Step 4: Simplify right side
    307.40x = 123,583.82
  5. Step 5: Solve for x
    x = 123,583.82/307.40
  6. Step 6: Final answer
    x = 402.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.