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Finding the Fourth Proportional to 374.34, 515.52 and 339.51

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Solution

The fourth proportional to 374.34, 515.52 and 339.51 is: 467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.34 : 515.52 = 339.51 : x
  2. Step 2: Convert to fraction form
    374.34/515.52 = 339.51/x
  3. Step 3: Cross multiply
    374.34x = 515.52 × 339.51
  4. Step 4: Simplify right side
    374.34x = 175,024.20
  5. Step 5: Solve for x
    x = 175,024.20/374.34
  6. Step 6: Final answer
    x = 467.55

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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.