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Finding the Fourth Proportional to 356.58, 492.07 and 214.87

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Solution

The fourth proportional to 356.58, 492.07 and 214.87 is: 296.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.58 : 492.07 = 214.87 : x
  2. Step 2: Convert to fraction form
    356.58/492.07 = 214.87/x
  3. Step 3: Cross multiply
    356.58x = 492.07 × 214.87
  4. Step 4: Simplify right side
    356.58x = 105,730.01
  5. Step 5: Solve for x
    x = 105,730.01/356.58
  6. Step 6: Final answer
    x = 296.52

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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.