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Finding the Fourth Proportional to 822.53, 1,233.61 and 383.51

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Solution

The fourth proportional to 822.53, 1,233.61 and 383.51 is: 575.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.53 : 1,233.61 = 383.51 : x
  2. Step 2: Convert to fraction form
    822.53/1,233.61 = 383.51/x
  3. Step 3: Cross multiply
    822.53x = 1,233.61 × 383.51
  4. Step 4: Simplify right side
    822.53x = 473,101.77
  5. Step 5: Solve for x
    x = 473,101.77/822.53
  6. Step 6: Final answer
    x = 575.18

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Double scale
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1.5x scale

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.