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Finding the Fourth Proportional to 374.02, 558.35 and 349.31

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Solution

The fourth proportional to 374.02, 558.35 and 349.31 is: 521.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.02 : 558.35 = 349.31 : x
  2. Step 2: Convert to fraction form
    374.02/558.35 = 349.31/x
  3. Step 3: Cross multiply
    374.02x = 558.35 × 349.31
  4. Step 4: Simplify right side
    374.02x = 195,037.24
  5. Step 5: Solve for x
    x = 195,037.24/374.02
  6. Step 6: Final answer
    x = 521.47

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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.