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Finding the Fourth Proportional to 440.16, 607.29 and 307.38

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Solution

The fourth proportional to 440.16, 607.29 and 307.38 is: 424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.16 : 607.29 = 307.38 : x
  2. Step 2: Convert to fraction form
    440.16/607.29 = 307.38/x
  3. Step 3: Cross multiply
    440.16x = 607.29 × 307.38
  4. Step 4: Simplify right side
    440.16x = 186,668.80
  5. Step 5: Solve for x
    x = 186,668.80/440.16
  6. Step 6: Final answer
    x = 424.09

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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.