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Finding the Fourth Proportional to 477.48, 715.61 and 203.50

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Solution

The fourth proportional to 477.48, 715.61 and 203.50 is: 304.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.48 : 715.61 = 203.50 : x
  2. Step 2: Convert to fraction form
    477.48/715.61 = 203.50/x
  3. Step 3: Cross multiply
    477.48x = 715.61 × 203.50
  4. Step 4: Simplify right side
    477.48x = 145,626.64
  5. Step 5: Solve for x
    x = 145,626.64/477.48
  6. Step 6: Final answer
    x = 304.99

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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.