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Finding the Fourth Proportional to 503.89, 695.64 and 304.76

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Solution

The fourth proportional to 503.89, 695.64 and 304.76 is: 420.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.89 : 695.64 = 304.76 : x
  2. Step 2: Convert to fraction form
    503.89/695.64 = 304.76/x
  3. Step 3: Cross multiply
    503.89x = 695.64 × 304.76
  4. Step 4: Simplify right side
    503.89x = 211,999.77
  5. Step 5: Solve for x
    x = 211,999.77/503.89
  6. Step 6: Final answer
    x = 420.73

Related Problems

Find fourth proportional to 251.94, 347.82 and 152.38
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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.