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Finding the Fourth Proportional to 524.10, 785.75 and 318.63

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Solution

The fourth proportional to 524.10, 785.75 and 318.63 is: 477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.10 : 785.75 = 318.63 : x
  2. Step 2: Convert to fraction form
    524.10/785.75 = 318.63/x
  3. Step 3: Cross multiply
    524.10x = 785.75 × 318.63
  4. Step 4: Simplify right side
    524.10x = 250,364.88
  5. Step 5: Solve for x
    x = 250,364.88/524.10
  6. Step 6: Final answer
    x = 477.70

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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.