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Finding the Fourth Proportional to 448.90, 670.28 and 402.32

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Solution

The fourth proportional to 448.90, 670.28 and 402.32 is: 600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.90 : 670.28 = 402.32 : x
  2. Step 2: Convert to fraction form
    448.90/670.28 = 402.32/x
  3. Step 3: Cross multiply
    448.90x = 670.28 × 402.32
  4. Step 4: Simplify right side
    448.90x = 269,666.71
  5. Step 5: Solve for x
    x = 269,666.71/448.90
  6. Step 6: Final answer
    x = 600.73

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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.