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Finding the Fourth Proportional to 477.54, 715.02 and 347.16

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Solution

The fourth proportional to 477.54, 715.02 and 347.16 is: 519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.54 : 715.02 = 347.16 : x
  2. Step 2: Convert to fraction form
    477.54/715.02 = 347.16/x
  3. Step 3: Cross multiply
    477.54x = 715.02 × 347.16
  4. Step 4: Simplify right side
    477.54x = 248,226.34
  5. Step 5: Solve for x
    x = 248,226.34/477.54
  6. Step 6: Final answer
    x = 519.80

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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.