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Finding the Fourth Proportional to 503.79, 695.24 and 282.77

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Solution

The fourth proportional to 503.79, 695.24 and 282.77 is: 390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.79 : 695.24 = 282.77 : x
  2. Step 2: Convert to fraction form
    503.79/695.24 = 282.77/x
  3. Step 3: Cross multiply
    503.79x = 695.24 × 282.77
  4. Step 4: Simplify right side
    503.79x = 196,589.19
  5. Step 5: Solve for x
    x = 196,589.19/503.79
  6. Step 6: Final answer
    x = 390.22

Related Problems

Find fourth proportional to 251.90, 347.62 and 141.38
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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.