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Finding the Fourth Proportional to 370.74, 510.66 and 348.06

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Solution

The fourth proportional to 370.74, 510.66 and 348.06 is: 479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.74 : 510.66 = 348.06 : x
  2. Step 2: Convert to fraction form
    370.74/510.66 = 348.06/x
  3. Step 3: Cross multiply
    370.74x = 510.66 × 348.06
  4. Step 4: Simplify right side
    370.74x = 177,740.32
  5. Step 5: Solve for x
    x = 177,740.32/370.74
  6. Step 6: Final answer
    x = 479.42

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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.