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Finding the Fourth Proportional to 654.23, 980.93 and 307.42

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Solution

The fourth proportional to 654.23, 980.93 and 307.42 is: 460.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.23 : 980.93 = 307.42 : x
  2. Step 2: Convert to fraction form
    654.23/980.93 = 307.42/x
  3. Step 3: Cross multiply
    654.23x = 980.93 × 307.42
  4. Step 4: Simplify right side
    654.23x = 301,555.82
  5. Step 5: Solve for x
    x = 301,555.82/654.23
  6. Step 6: Final answer
    x = 460.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.