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Finding the Fourth Proportional to 653.00, 979.55 and 262.98

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Solution

The fourth proportional to 653.00, 979.55 and 262.98 is: 394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.00 : 979.55 = 262.98 : x
  2. Step 2: Convert to fraction form
    653.00/979.55 = 262.98/x
  3. Step 3: Cross multiply
    653.00x = 979.55 × 262.98
  4. Step 4: Simplify right side
    653.00x = 257,603.21
  5. Step 5: Solve for x
    x = 257,603.21/653.00
  6. Step 6: Final answer
    x = 394.49

Related Problems

Find fourth proportional to 326.50, 489.78 and 131.49
Half scale
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Double scale
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Similar ratio
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1.5x scale

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.