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Finding the Fourth Proportional to 524.63, 785.40 and 459.76

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Solution

The fourth proportional to 524.63, 785.40 and 459.76 is: 688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.63 : 785.40 = 459.76 : x
  2. Step 2: Convert to fraction form
    524.63/785.40 = 459.76/x
  3. Step 3: Cross multiply
    524.63x = 785.40 × 459.76
  4. Step 4: Simplify right side
    524.63x = 361,095.50
  5. Step 5: Solve for x
    x = 361,095.50/524.63
  6. Step 6: Final answer
    x = 688.29

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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.