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Finding the Fourth Proportional to 543.91, 750.40 and 357.50

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Solution

The fourth proportional to 543.91, 750.40 and 357.50 is: 493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.91 : 750.40 = 357.50 : x
  2. Step 2: Convert to fraction form
    543.91/750.40 = 357.50/x
  3. Step 3: Cross multiply
    543.91x = 750.40 × 357.50
  4. Step 4: Simplify right side
    543.91x = 268,268
  5. Step 5: Solve for x
    x = 268,268/543.91
  6. Step 6: Final answer
    x = 493.22

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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.