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Finding the Fourth Proportional to 440.16, 607.12 and 256.16

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Solution

The fourth proportional to 440.16, 607.12 and 256.16 is: 353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.16 : 607.12 = 256.16 : x
  2. Step 2: Convert to fraction form
    440.16/607.12 = 256.16/x
  3. Step 3: Cross multiply
    440.16x = 607.12 × 256.16
  4. Step 4: Simplify right side
    440.16x = 155,519.86
  5. Step 5: Solve for x
    x = 155,519.86/440.16
  6. Step 6: Final answer
    x = 353.33

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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.