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Finding the Fourth Proportional to 578.57, 799.45 and 504.77

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Solution

The fourth proportional to 578.57, 799.45 and 504.77 is: 697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.57 : 799.45 = 504.77 : x
  2. Step 2: Convert to fraction form
    578.57/799.45 = 504.77/x
  3. Step 3: Cross multiply
    578.57x = 799.45 × 504.77
  4. Step 4: Simplify right side
    578.57x = 403,533.12
  5. Step 5: Solve for x
    x = 403,533.12/578.57
  6. Step 6: Final answer
    x = 697.47

Related Problems

Find fourth proportional to 289.28, 399.72 and 252.38
Half scale
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Double scale
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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.