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Finding the Fourth Proportional to 692.85, 955.70 and 526.70

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Solution

The fourth proportional to 692.85, 955.70 and 526.70 is: 726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.85 : 955.70 = 526.70 : x
  2. Step 2: Convert to fraction form
    692.85/955.70 = 526.70/x
  3. Step 3: Cross multiply
    692.85x = 955.70 × 526.70
  4. Step 4: Simplify right side
    692.85x = 503,368.92
  5. Step 5: Solve for x
    x = 503,368.92/692.85
  6. Step 6: Final answer
    x = 726.52

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1.5x scale

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.