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Finding the Fourth Proportional to 440.53, 661.47 and 358.59

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Solution

The fourth proportional to 440.53, 661.47 and 358.59 is: 538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.53 : 661.47 = 358.59 : x
  2. Step 2: Convert to fraction form
    440.53/661.47 = 358.59/x
  3. Step 3: Cross multiply
    440.53x = 661.47 × 358.59
  4. Step 4: Simplify right side
    440.53x = 237,196.53
  5. Step 5: Solve for x
    x = 237,196.53/440.53
  6. Step 6: Final answer
    x = 538.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.