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Finding the Fourth Proportional to 449.42, 670.95 and 372.47

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Solution

The fourth proportional to 449.42, 670.95 and 372.47 is: 556.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.42 : 670.95 = 372.47 : x
  2. Step 2: Convert to fraction form
    449.42/670.95 = 372.47/x
  3. Step 3: Cross multiply
    449.42x = 670.95 × 372.47
  4. Step 4: Simplify right side
    449.42x = 249,905.39
  5. Step 5: Solve for x
    x = 249,905.39/449.42
  6. Step 6: Final answer
    x = 556.07

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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.