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Finding the Fourth Proportional to 307.53, 424.89 and 242.53

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Solution

The fourth proportional to 307.53, 424.89 and 242.53 is: 335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.53 : 424.89 = 242.53 : x
  2. Step 2: Convert to fraction form
    307.53/424.89 = 242.53/x
  3. Step 3: Cross multiply
    307.53x = 424.89 × 242.53
  4. Step 4: Simplify right side
    307.53x = 103,047.51
  5. Step 5: Solve for x
    x = 103,047.51/307.53
  6. Step 6: Final answer
    x = 335.08

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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.