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Finding the Fourth Proportional to 477.06, 715.35 and 245.91

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Solution

The fourth proportional to 477.06, 715.35 and 245.91 is: 368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.06 : 715.35 = 245.91 : x
  2. Step 2: Convert to fraction form
    477.06/715.35 = 245.91/x
  3. Step 3: Cross multiply
    477.06x = 715.35 × 245.91
  4. Step 4: Simplify right side
    477.06x = 175,911.72
  5. Step 5: Solve for x
    x = 175,911.72/477.06
  6. Step 6: Final answer
    x = 368.74

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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.