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Finding the Fourth Proportional to 342.60, 474.06 and 292.74

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Solution

The fourth proportional to 342.60, 474.06 and 292.74 is: 405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.60 : 474.06 = 292.74 : x
  2. Step 2: Convert to fraction form
    342.60/474.06 = 292.74/x
  3. Step 3: Cross multiply
    342.60x = 474.06 × 292.74
  4. Step 4: Simplify right side
    342.60x = 138,776.32
  5. Step 5: Solve for x
    x = 138,776.32/342.60
  6. Step 6: Final answer
    x = 405.07

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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.