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Finding the Fourth Proportional to 543.03, 813.93 and 312.03

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Solution

The fourth proportional to 543.03, 813.93 and 312.03 is: 467.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.03 : 813.93 = 312.03 : x
  2. Step 2: Convert to fraction form
    543.03/813.93 = 312.03/x
  3. Step 3: Cross multiply
    543.03x = 813.93 × 312.03
  4. Step 4: Simplify right side
    543.03x = 253,970.58
  5. Step 5: Solve for x
    x = 253,970.58/543.03
  6. Step 6: Final answer
    x = 467.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.