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Finding the Fourth Proportional to 543.34, 751.21 and 535.48

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Solution

The fourth proportional to 543.34, 751.21 and 535.48 is: 740.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.34 : 751.21 = 535.48 : x
  2. Step 2: Convert to fraction form
    543.34/751.21 = 535.48/x
  3. Step 3: Cross multiply
    543.34x = 751.21 × 535.48
  4. Step 4: Simplify right side
    543.34x = 402,254.71
  5. Step 5: Solve for x
    x = 402,254.71/543.34
  6. Step 6: Final answer
    x = 740.34

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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.