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Finding the Fourth Proportional to 965.78, 1,333 and 567.62

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Solution

The fourth proportional to 965.78, 1,333 and 567.62 is: 783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.78 : 1,333 = 567.62 : x
  2. Step 2: Convert to fraction form
    965.78/1,333 = 567.62/x
  3. Step 3: Cross multiply
    965.78x = 1,333 × 567.62
  4. Step 4: Simplify right side
    965.78x = 756,637.46
  5. Step 5: Solve for x
    x = 756,637.46/965.78
  6. Step 6: Final answer
    x = 783.45

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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.