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Finding the Fourth Proportional to 567.40, 782.76 and 346.30

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Solution

The fourth proportional to 567.40, 782.76 and 346.30 is: 477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.40 : 782.76 = 346.30 : x
  2. Step 2: Convert to fraction form
    567.40/782.76 = 346.30/x
  3. Step 3: Cross multiply
    567.40x = 782.76 × 346.30
  4. Step 4: Simplify right side
    567.40x = 271,069.79
  5. Step 5: Solve for x
    x = 271,069.79/567.40
  6. Step 6: Final answer
    x = 477.74

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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.