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Finding the Fourth Proportional to 841.13, 1,160.66 and 509.60

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Solution

The fourth proportional to 841.13, 1,160.66 and 509.60 is: 703.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.13 : 1,160.66 = 509.60 : x
  2. Step 2: Convert to fraction form
    841.13/1,160.66 = 509.60/x
  3. Step 3: Cross multiply
    841.13x = 1,160.66 × 509.60
  4. Step 4: Simplify right side
    841.13x = 591,476.51
  5. Step 5: Solve for x
    x = 591,476.51/841.13
  6. Step 6: Final answer
    x = 703.19

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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.