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Finding the Fourth Proportional to 524.54, 786.98 and 316.54

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Solution

The fourth proportional to 524.54, 786.98 and 316.54 is: 474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.54 : 786.98 = 316.54 : x
  2. Step 2: Convert to fraction form
    524.54/786.98 = 316.54/x
  3. Step 3: Cross multiply
    524.54x = 786.98 × 316.54
  4. Step 4: Simplify right side
    524.54x = 249,105.13
  5. Step 5: Solve for x
    x = 249,105.13/524.54
  6. Step 6: Final answer
    x = 474.90

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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.