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Finding the Fourth Proportional to 543.35, 748.64 and 368.39

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Solution

The fourth proportional to 543.35, 748.64 and 368.39 is: 507.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.35 : 748.64 = 368.39 : x
  2. Step 2: Convert to fraction form
    543.35/748.64 = 368.39/x
  3. Step 3: Cross multiply
    543.35x = 748.64 × 368.39
  4. Step 4: Simplify right side
    543.35x = 275,788.67
  5. Step 5: Solve for x
    x = 275,788.67/543.35
  6. Step 6: Final answer
    x = 507.58

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Double scale
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Similar ratio
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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.