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Finding the Fourth Proportional to 567.28, 783.12 and 433.40

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Solution

The fourth proportional to 567.28, 783.12 and 433.40 is: 598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.28 : 783.12 = 433.40 : x
  2. Step 2: Convert to fraction form
    567.28/783.12 = 433.40/x
  3. Step 3: Cross multiply
    567.28x = 783.12 × 433.40
  4. Step 4: Simplify right side
    567.28x = 339,404.21
  5. Step 5: Solve for x
    x = 339,404.21/567.28
  6. Step 6: Final answer
    x = 598.30

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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.