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Finding the Fourth Proportional to 477.11, 715.55 and 348.63

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Solution

The fourth proportional to 477.11, 715.55 and 348.63 is: 522.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.11 : 715.55 = 348.63 : x
  2. Step 2: Convert to fraction form
    477.11/715.55 = 348.63/x
  3. Step 3: Cross multiply
    477.11x = 715.55 × 348.63
  4. Step 4: Simplify right side
    477.11x = 249,460.38
  5. Step 5: Solve for x
    x = 249,460.38/477.11
  6. Step 6: Final answer
    x = 522.85

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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.