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Finding the Fourth Proportional to 468.31, 646.14 and 302.58

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Solution

The fourth proportional to 468.31, 646.14 and 302.58 is: 417.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.31 : 646.14 = 302.58 : x
  2. Step 2: Convert to fraction form
    468.31/646.14 = 302.58/x
  3. Step 3: Cross multiply
    468.31x = 646.14 × 302.58
  4. Step 4: Simplify right side
    468.31x = 195,509.04
  5. Step 5: Solve for x
    x = 195,509.04/468.31
  6. Step 6: Final answer
    x = 417.48

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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.