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Finding the Fourth Proportional to 317.84, 435.71 and 302.18

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Solution

The fourth proportional to 317.84, 435.71 and 302.18 is: 414.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.84 : 435.71 = 302.18 : x
  2. Step 2: Convert to fraction form
    317.84/435.71 = 302.18/x
  3. Step 3: Cross multiply
    317.84x = 435.71 × 302.18
  4. Step 4: Simplify right side
    317.84x = 131,662.85
  5. Step 5: Solve for x
    x = 131,662.85/317.84
  6. Step 6: Final answer
    x = 414.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.