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Finding the Fourth Proportional to 567.45, 783.06 and 354.72

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Solution

The fourth proportional to 567.45, 783.06 and 354.72 is: 489.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.45 : 783.06 = 354.72 : x
  2. Step 2: Convert to fraction form
    567.45/783.06 = 354.72/x
  3. Step 3: Cross multiply
    567.45x = 783.06 × 354.72
  4. Step 4: Simplify right side
    567.45x = 277,767.04
  5. Step 5: Solve for x
    x = 277,767.04/567.45
  6. Step 6: Final answer
    x = 489.50

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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.