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Finding the Fourth Proportional to 307.14, 423.90 and 176.16

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Solution

The fourth proportional to 307.14, 423.90 and 176.16 is: 243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.14 : 423.90 = 176.16 : x
  2. Step 2: Convert to fraction form
    307.14/423.90 = 176.16/x
  3. Step 3: Cross multiply
    307.14x = 423.90 × 176.16
  4. Step 4: Simplify right side
    307.14x = 74,674.22
  5. Step 5: Solve for x
    x = 74,674.22/307.14
  6. Step 6: Final answer
    x = 243.13

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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.