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Finding the Fourth Proportional to 365.58, 545.76 and 316.98

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Solution

The fourth proportional to 365.58, 545.76 and 316.98 is: 473.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.58 : 545.76 = 316.98 : x
  2. Step 2: Convert to fraction form
    365.58/545.76 = 316.98/x
  3. Step 3: Cross multiply
    365.58x = 545.76 × 316.98
  4. Step 4: Simplify right side
    365.58x = 172,995.00
  5. Step 5: Solve for x
    x = 172,995.00/365.58
  6. Step 6: Final answer
    x = 473.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.