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Finding the Fourth Proportional to 524.21, 723.18 and 356.11

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Solution

The fourth proportional to 524.21, 723.18 and 356.11 is: 491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.21 : 723.18 = 356.11 : x
  2. Step 2: Convert to fraction form
    524.21/723.18 = 356.11/x
  3. Step 3: Cross multiply
    524.21x = 723.18 × 356.11
  4. Step 4: Simplify right side
    524.21x = 257,531.63
  5. Step 5: Solve for x
    x = 257,531.63/524.21
  6. Step 6: Final answer
    x = 491.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.