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Finding the Fourth Proportional to 374.74, 557.85 and 357.05

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Solution

The fourth proportional to 374.74, 557.85 and 357.05 is: 531.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.74 : 557.85 = 357.05 : x
  2. Step 2: Convert to fraction form
    374.74/557.85 = 357.05/x
  3. Step 3: Cross multiply
    374.74x = 557.85 × 357.05
  4. Step 4: Simplify right side
    374.74x = 199,180.34
  5. Step 5: Solve for x
    x = 199,180.34/374.74
  6. Step 6: Final answer
    x = 531.52

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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.