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Finding the Fourth Proportional to 1,068.47, 1,474.59 and 670.19

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Solution

The fourth proportional to 1,068.47, 1,474.59 and 670.19 is: 924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.47 : 1,474.59 = 670.19 : x
  2. Step 2: Convert to fraction form
    1,068.47/1,474.59 = 670.19/x
  3. Step 3: Cross multiply
    1,068.47x = 1,474.59 × 670.19
  4. Step 4: Simplify right side
    1,068.47x = 988,252.12
  5. Step 5: Solve for x
    x = 988,252.12/1,068.47
  6. Step 6: Final answer
    x = 924.93

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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.