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Finding the Fourth Proportional to 579.51, 799.35 and 330.77

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Solution

The fourth proportional to 579.51, 799.35 and 330.77 is: 456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.51 : 799.35 = 330.77 : x
  2. Step 2: Convert to fraction form
    579.51/799.35 = 330.77/x
  3. Step 3: Cross multiply
    579.51x = 799.35 × 330.77
  4. Step 4: Simplify right side
    579.51x = 264,397.00
  5. Step 5: Solve for x
    x = 264,397.00/579.51
  6. Step 6: Final answer
    x = 456.24

Related Problems

Find fourth proportional to 289.76, 399.68 and 165.38
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.