Home / 1,011.18-1,395.40-569.10

Finding the Fourth Proportional to 1,011.18, 1,395.40 and 569.10

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Solution

The fourth proportional to 1,011.18, 1,395.40 and 569.10 is: 785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.18 : 1,395.40 = 569.10 : x
  2. Step 2: Convert to fraction form
    1,011.18/1,395.40 = 569.10/x
  3. Step 3: Cross multiply
    1,011.18x = 1,395.40 × 569.10
  4. Step 4: Simplify right side
    1,011.18x = 794,122.14
  5. Step 5: Solve for x
    x = 794,122.14/1,011.18
  6. Step 6: Final answer
    x = 785.34

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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.