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Finding the Fourth Proportional to 810.06, 1,117.42 and 561.52

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Solution

The fourth proportional to 810.06, 1,117.42 and 561.52 is: 774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    810.06 : 1,117.42 = 561.52 : x
  2. Step 2: Convert to fraction form
    810.06/1,117.42 = 561.52/x
  3. Step 3: Cross multiply
    810.06x = 1,117.42 × 561.52
  4. Step 4: Simplify right side
    810.06x = 627,453.68
  5. Step 5: Solve for x
    x = 627,453.68/810.06
  6. Step 6: Final answer
    x = 774.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.