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Finding the Fourth Proportional to 364.66, 503.19 and 215.31

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Solution

The fourth proportional to 364.66, 503.19 and 215.31 is: 297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.66 : 503.19 = 215.31 : x
  2. Step 2: Convert to fraction form
    364.66/503.19 = 215.31/x
  3. Step 3: Cross multiply
    364.66x = 503.19 × 215.31
  4. Step 4: Simplify right side
    364.66x = 108,341.84
  5. Step 5: Solve for x
    x = 108,341.84/364.66
  6. Step 6: Final answer
    x = 297.10

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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.