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Finding the Fourth Proportional to 1,598.12, 2,398.58 and 777

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Solution

The fourth proportional to 1,598.12, 2,398.58 and 777 is: 1,166.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.12 : 2,398.58 = 777 : x
  2. Step 2: Convert to fraction form
    1,598.12/2,398.58 = 777/x
  3. Step 3: Cross multiply
    1,598.12x = 2,398.58 × 777
  4. Step 4: Simplify right side
    1,598.12x = 1,863,696.66
  5. Step 5: Solve for x
    x = 1,863,696.66/1,598.12
  6. Step 6: Final answer
    x = 1,166.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.