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Finding the Fourth Proportional to 342.42, 510.58 and 338.16

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Solution

The fourth proportional to 342.42, 510.58 and 338.16 is: 504.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.42 : 510.58 = 338.16 : x
  2. Step 2: Convert to fraction form
    342.42/510.58 = 338.16/x
  3. Step 3: Cross multiply
    342.42x = 510.58 × 338.16
  4. Step 4: Simplify right side
    342.42x = 172,657.32
  5. Step 5: Solve for x
    x = 172,657.32/342.42
  6. Step 6: Final answer
    x = 504.23

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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.