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Finding the Fourth Proportional to 1,036.84, 1,555.70 and 488.98

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Solution

The fourth proportional to 1,036.84, 1,555.70 and 488.98 is: 733.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.84 : 1,555.70 = 488.98 : x
  2. Step 2: Convert to fraction form
    1,036.84/1,555.70 = 488.98/x
  3. Step 3: Cross multiply
    1,036.84x = 1,555.70 × 488.98
  4. Step 4: Simplify right side
    1,036.84x = 760,706.19
  5. Step 5: Solve for x
    x = 760,706.19/1,036.84
  6. Step 6: Final answer
    x = 733.68

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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.