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Finding the Fourth Proportional to 897.36, 1,347.21 and 692.07

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Solution

The fourth proportional to 897.36, 1,347.21 and 692.07 is: 1,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.36 : 1,347.21 = 692.07 : x
  2. Step 2: Convert to fraction form
    897.36/1,347.21 = 692.07/x
  3. Step 3: Cross multiply
    897.36x = 1,347.21 × 692.07
  4. Step 4: Simplify right side
    897.36x = 932,363.62
  5. Step 5: Solve for x
    x = 932,363.62/897.36
  6. Step 6: Final answer
    x = 1,039.01

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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.