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Finding the Fourth Proportional to 692.20, 955.35 and 526.15

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Solution

The fourth proportional to 692.20, 955.35 and 526.15 is: 726.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.20 : 955.35 = 526.15 : x
  2. Step 2: Convert to fraction form
    692.20/955.35 = 526.15/x
  3. Step 3: Cross multiply
    692.20x = 955.35 × 526.15
  4. Step 4: Simplify right side
    692.20x = 502,657.40
  5. Step 5: Solve for x
    x = 502,657.40/692.20
  6. Step 6: Final answer
    x = 726.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.