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Finding the Fourth Proportional to 828.42, 1,143.48 and 567.19

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Solution

The fourth proportional to 828.42, 1,143.48 and 567.19 is: 782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.42 : 1,143.48 = 567.19 : x
  2. Step 2: Convert to fraction form
    828.42/1,143.48 = 567.19/x
  3. Step 3: Cross multiply
    828.42x = 1,143.48 × 567.19
  4. Step 4: Simplify right side
    828.42x = 648,570.42
  5. Step 5: Solve for x
    x = 648,570.42/828.42
  6. Step 6: Final answer
    x = 782.90

Related Problems

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Half scale
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Double scale
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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.