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Finding the Fourth Proportional to 545.99, 753.60 and 336.40

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Solution

The fourth proportional to 545.99, 753.60 and 336.40 is: 464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.99 : 753.60 = 336.40 : x
  2. Step 2: Convert to fraction form
    545.99/753.60 = 336.40/x
  3. Step 3: Cross multiply
    545.99x = 753.60 × 336.40
  4. Step 4: Simplify right side
    545.99x = 253,514.66
  5. Step 5: Solve for x
    x = 253,514.66/545.99
  6. Step 6: Final answer
    x = 464.32

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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.