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Finding the Fourth Proportional to 427.05, 587.93 and 316.35

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Solution

The fourth proportional to 427.05, 587.93 and 316.35 is: 435.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.05 : 587.93 = 316.35 : x
  2. Step 2: Convert to fraction form
    427.05/587.93 = 316.35/x
  3. Step 3: Cross multiply
    427.05x = 587.93 × 316.35
  4. Step 4: Simplify right side
    427.05x = 185,990.07
  5. Step 5: Solve for x
    x = 185,990.07/427.05
  6. Step 6: Final answer
    x = 435.52

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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.