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Finding the Fourth Proportional to 524.32, 786.65 and 316.32

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Solution

The fourth proportional to 524.32, 786.65 and 316.32 is: 474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.32 : 786.65 = 316.32 : x
  2. Step 2: Convert to fraction form
    524.32/786.65 = 316.32/x
  3. Step 3: Cross multiply
    524.32x = 786.65 × 316.32
  4. Step 4: Simplify right side
    524.32x = 248,828.60
  5. Step 5: Solve for x
    x = 248,828.60/524.32
  6. Step 6: Final answer
    x = 474.58

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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.