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Finding the Fourth Proportional to 342.96, 510.18 and 339.48

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Solution

The fourth proportional to 342.96, 510.18 and 339.48 is: 505.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.96 : 510.18 = 339.48 : x
  2. Step 2: Convert to fraction form
    342.96/510.18 = 339.48/x
  3. Step 3: Cross multiply
    342.96x = 510.18 × 339.48
  4. Step 4: Simplify right side
    342.96x = 173,195.91
  5. Step 5: Solve for x
    x = 173,195.91/342.96
  6. Step 6: Final answer
    x = 505.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.