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Finding the Fourth Proportional to 1,010.80, 1,394.99 and 568.81

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Solution

The fourth proportional to 1,010.80, 1,394.99 and 568.81 is: 785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.80 : 1,394.99 = 568.81 : x
  2. Step 2: Convert to fraction form
    1,010.80/1,394.99 = 568.81/x
  3. Step 3: Cross multiply
    1,010.80x = 1,394.99 × 568.81
  4. Step 4: Simplify right side
    1,010.80x = 793,484.26
  5. Step 5: Solve for x
    x = 793,484.26/1,010.80
  6. Step 6: Final answer
    x = 785.01

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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.