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Finding the Fourth Proportional to 567.91, 783.80 and 346.89

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Solution

The fourth proportional to 567.91, 783.80 and 346.89 is: 478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.91 : 783.80 = 346.89 : x
  2. Step 2: Convert to fraction form
    567.91/783.80 = 346.89/x
  3. Step 3: Cross multiply
    567.91x = 783.80 × 346.89
  4. Step 4: Simplify right side
    567.91x = 271,892.38
  5. Step 5: Solve for x
    x = 271,892.38/567.91
  6. Step 6: Final answer
    x = 478.76

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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.