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Finding the Fourth Proportional to 764.10, 1,053.72 and 568.08

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Solution

The fourth proportional to 764.10, 1,053.72 and 568.08 is: 783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.10 : 1,053.72 = 568.08 : x
  2. Step 2: Convert to fraction form
    764.10/1,053.72 = 568.08/x
  3. Step 3: Cross multiply
    764.10x = 1,053.72 × 568.08
  4. Step 4: Simplify right side
    764.10x = 598,597.26
  5. Step 5: Solve for x
    x = 598,597.26/764.10
  6. Step 6: Final answer
    x = 783.40

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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.