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Finding the Fourth Proportional to 482.40, 664.20 and 370.47

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Solution

The fourth proportional to 482.40, 664.20 and 370.47 is: 510.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.40 : 664.20 = 370.47 : x
  2. Step 2: Convert to fraction form
    482.40/664.20 = 370.47/x
  3. Step 3: Cross multiply
    482.40x = 664.20 × 370.47
  4. Step 4: Simplify right side
    482.40x = 246,066.17
  5. Step 5: Solve for x
    x = 246,066.17/482.40
  6. Step 6: Final answer
    x = 510.09

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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.