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Finding the Fourth Proportional to 545.80, 753.33 and 346.51

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Solution

The fourth proportional to 545.80, 753.33 and 346.51 is: 478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.80 : 753.33 = 346.51 : x
  2. Step 2: Convert to fraction form
    545.80/753.33 = 346.51/x
  3. Step 3: Cross multiply
    545.80x = 753.33 × 346.51
  4. Step 4: Simplify right side
    545.80x = 261,036.38
  5. Step 5: Solve for x
    x = 261,036.38/545.80
  6. Step 6: Final answer
    x = 478.26

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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.