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Finding the Fourth Proportional to 723, 999.54 and 692.40

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Solution

The fourth proportional to 723, 999.54 and 692.40 is: 957.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    723 : 999.54 = 692.40 : x
  2. Step 2: Convert to fraction form
    723/999.54 = 692.40/x
  3. Step 3: Cross multiply
    723x = 999.54 × 692.40
  4. Step 4: Simplify right side
    723x = 692,081.50
  5. Step 5: Solve for x
    x = 692,081.50/723
  6. Step 6: Final answer
    x = 957.24

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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.