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Finding the Fourth Proportional to 1,698.41, 2,547.62 and 723.89

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Solution

The fourth proportional to 1,698.41, 2,547.62 and 723.89 is: 1,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.41 : 2,547.62 = 723.89 : x
  2. Step 2: Convert to fraction form
    1,698.41/2,547.62 = 723.89/x
  3. Step 3: Cross multiply
    1,698.41x = 2,547.62 × 723.89
  4. Step 4: Simplify right side
    1,698.41x = 1,844,196.64
  5. Step 5: Solve for x
    x = 1,844,196.64/1,698.41
  6. Step 6: Final answer
    x = 1,085.84

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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.