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Finding the Fourth Proportional to 643.73, 964.17 and 526.14

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Solution

The fourth proportional to 643.73, 964.17 and 526.14 is: 788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.73 : 964.17 = 526.14 : x
  2. Step 2: Convert to fraction form
    643.73/964.17 = 526.14/x
  3. Step 3: Cross multiply
    643.73x = 964.17 × 526.14
  4. Step 4: Simplify right side
    643.73x = 507,288.40
  5. Step 5: Solve for x
    x = 507,288.40/643.73
  6. Step 6: Final answer
    x = 788.05

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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.